Heat exchange assembly for mobile air conditioner

Abstract

The utility model discloses a heat exchange assembly for a mobile air conditioner, which comprises a front end plate, a rear end plate, a condensation heat exchange tube and an evaporation heat exchange tube, the front parts and the rear parts of the condensation heat exchange tube and the evaporation heat exchange tube are respectively fixed on the front end plate and the rear end plate, and a plurality of radiating fins are fixed on the condensation heat exchange tube and the evaporation heat exchange tube; the condensation heat exchange pipe is located below the evaporation heat exchange pipe, the transition heat exchange pipe is arranged below the condensation heat exchange pipe, and the front portion and the rear portion of the transition heat exchange pipe are fixed to the lower portion of the front end plate and the lower portion of the rear end plate respectively. The condensation heat exchange tube is composed of the three condensation branch heat exchange tubes, the evaporation heat exchange tube is composed of the two branch heat exchange tubes, the flow of refrigerants is greatly increased, the heat exchange effect is good, meanwhile, the two capillary tubes are arranged for refrigerant throttling, throttling uniformity is improved, the flow of the refrigerants during throttling is also improved, and therefore the refrigeration effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger processing equipment, and more particularly to a heat exchange component for a mobile air conditioner. Background Art

[0002] Current mobile air conditioners are equipped with an evaporator and a condenser, each of which is composed of a heat exchange tube and a plurality of heat exchange fins fixed thereon. Existing evaporators and condensers are both made of a single heat exchange tube, which limits the flow of refrigerant at the same time and reduces heat exchange efficiency.

[0003] At the same time, since the evaporator and condenser are set in the same air conditioner, the distance between the two is relatively small, so the refrigerant from the condenser enters the capillary tube immediately after coming out, and then enters the evaporator, so that the temperature of the refrigerant coming out of the condenser is not low enough, thus affecting the subsequent cooling effect. Utility Model Content

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art and to provide a heat exchange assembly for a mobile air conditioner, which consists of three condensing sub-heat exchange tubes forming a condensing heat exchange tube, and two sub-heat exchange tubes forming an evaporating heat exchange tube, so that the flow rate of the refrigerant is greatly increased, and the heat exchange effect is improved. At the same time, two capillaries are provided for refrigerant throttling, which improves the throttling uniformity and also increases the flow rate of the refrigerant during throttling, thereby improving the refrigeration effect.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A heat exchange assembly for a mobile air conditioner includes a front end plate, a rear end plate, a condensing heat exchange tube, and an evaporating heat exchange tube. The front and rear portions of the condensing heat exchange tube and the evaporating heat exchange tube are fixed to the front end plate and the rear end plate, respectively. A plurality of heat dissipation fins are fixed to the condensing heat exchange tube and the evaporating heat exchange tube.

[0007] The condensing heat exchange tube is located below the evaporating heat exchange tube. A transition heat exchange tube is provided below the condensing heat exchange tube. The front and rear portions of the transition heat exchange tube are fixed to the lower portions of the front end plate and the rear end plate respectively.

[0008] The discharge port of the condensing heat exchange tube is connected to the feed port of the transition heat exchange tube through the first connecting tube. The discharge port of the transition heat exchange tube is connected to the feed port of the capillary connecting tube. The two discharge ports of the capillary connecting tube are each connected to a capillary tube. The discharge ports of the two capillaries are connected to the two feed ports of the evaporating heat exchange tube.

[0009] The evaporation heat exchange tube includes two S-shaped coiled sub-heat exchange tubes, the two sub-heat exchange tubes are arranged side by side up and down, and the discharge ports of the two capillaries are connected to the feed ports of the two sub-heat exchange tubes.

[0010] The condensation heat exchange tube includes three condensation sub-heat exchange tubes coiled in an S shape, and the three condensation sub-heat exchange tubes are arranged side by side up and down. The feed ports of the three condensation sub-heat exchange tubes are connected to the inlet pipe main part. A feed port is formed at one end of the inlet pipe main part, and three outlets are formed on the side wall of the inlet pipe main part. The feed ports of the three condensation sub-heat exchange tubes are welded and fixed on the side wall of the inlet pipe main part and are connected to the corresponding outlets.

[0011] The main part of the inlet pipe is a stepped pipe, the upper part of which is a large-diameter pipe part and the lower part is a small-diameter pipe part. The feed ports of the two upper condensation branch heat exchange pipes are fixed on the outer wall of the large-diameter pipe part and are connected to the corresponding outlets thereon, and the feed ports of the lower condensation branch heat exchange pipes are fixed on the outer wall of the small-diameter pipe part and are connected to the corresponding outlets thereon.

[0012] The outstanding effects of the utility model are:

[0013] Compared with the existing technology, it consists of three condensing heat exchange tubes to form a condensing heat exchange tube, and two sub-heat exchange tubes to form an evaporating heat exchange tube, which greatly increases the flow rate of the refrigerant and improves the heat exchange effect. At the same time, two capillaries are set to throttle the refrigerant, which improves the throttling uniformity and also increases the flow rate of the refrigerant during throttling, thereby improving the refrigeration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial structural diagram of the utility model;

[0015] Figure 2 It is a partial side view of the utility model;

[0016] Figure 3 This is the overall flow diagram of the refrigerant of the present invention. DETAILED DESCRIPTION

[0017] For example, see Figures 1 to 3 As shown, a heat exchange assembly for a mobile air conditioner includes a front end plate 1, a rear end plate 2, a condensing heat exchange tube 3, and an evaporating heat exchange tube 4. The front and rear portions of the condensing heat exchange tube 3 and the evaporating heat exchange tube 4 are fixed to the front end plate 1 and the rear end plate 2, respectively. A plurality of heat dissipation fins 5 are fixed to the condensing heat exchange tube 3 and the evaporating heat exchange tube 4.

[0018] The condensing heat exchange tube 3 is located below the evaporating heat exchange tube 4. A transition heat exchange tube 6 is provided below the condensing heat exchange tube 3. The front and rear portions of the transition heat exchange tube 6 are respectively fixed to the lower portions of the front end plate 1 and the rear end plate 2. Heat dissipation fins 5 are also fixed to the outer side wall of the transition heat exchange tube 6. The transition heat exchange tube 6 is coiled in an S shape.

[0019] The discharge port of the condensing heat exchange tube 3 is connected to the feed port of the transition heat exchange tube 6 via a first connecting tube 7. The discharge port of the transition heat exchange tube 6 is connected to the feed port of a capillary connecting tube 8. Each of the two discharge ports of the capillary connecting tube 8 is connected to a capillary tube 9. A charging pipe (for refrigerant replenishment) is connected to the side wall of the capillary connecting tube 8. The discharge ports of the two capillary tubes 9 are connected to the two feed ports of the evaporating heat exchange tube 4. A filter screen or filter screen sleeve is fixed inside the capillary connecting tube 8. The filter screen covers the central flow hole of the capillary connecting tube 8 and filters the refrigerant flowing therethrough.

[0020] The transition heat exchange tube 6 can increase the flow time of the refrigerant after it flows out of the condensing heat exchange tube 3, temporarily delay the time of entering the capillary tube 9, and further reduce the temperature of the flowing refrigerant.

[0021] Furthermore, the evaporation heat exchange tube 4 includes two S-shaped coiled branch heat exchange tubes 41, the two branch heat exchange tubes 41 are arranged side by side up and down, and the discharge ports of the two capillaries 9 are connected to the feed ports of the two branch heat exchange tubes 41. The condensation heat exchange tube 3 includes three S-shaped coiled condensation branch heat exchange tubes 31, the three condensation branch heat exchange tubes 31 are arranged side by side up and down, and the feed ports of the three condensation branch heat exchange tubes 31 are connected to the inlet pipe main part 10. The inlet port is formed at one end of the inlet pipe main part 10, and three outlets are formed on the side wall of the inlet pipe main part 10. The outlets are connected to the vertical through hole in the middle of the inlet pipe main part 10, and the feed port is connected to the vertical through hole in the middle of the inlet pipe main part 10. The feed ports of the three condensation branch heat exchange tubes 31 are welded and fixed to the side wall of the inlet pipe main part 10 and are connected to the corresponding outlets.

[0022] The inlet pipe main part 10 is a stepped pipe, the upper part of which is a large-diameter pipe part and the lower part is a small-diameter pipe part. The feed ports of the two upper condensation branch heat exchange pipes 31 are fixed on the outer wall of the large-diameter pipe part and are communicated with the corresponding outlets thereon, and the feed port of the lower condensation branch heat exchange pipe 31 is fixed on the outer wall of the small-diameter pipe part and is communicated with the corresponding outlets thereon; adopting this structure, the material usage of the inlet pipe main part 10 can be reduced and the cost can be reduced. Moreover, since the feed ports of the two upper condensation branch heat exchange pipes 31 are fixed on the outer wall of the large-diameter pipe part and are communicated with the corresponding outlets thereon, and the feed port of the lower condensation branch heat exchange pipe 31 is fixed on the outer wall of the small-diameter pipe part and is communicated with the corresponding outlets thereon, the design of the large-diameter pipe part and the small-diameter pipe part can control the flow rate and improve the uniformity of the refrigerant flowing to the three condensation branch heat exchange pipes 31.

[0023] The discharge ports of the three condensation heat exchange tubes 31 are welded and fixed to the side wall of the same connecting tube 20 and communicate with the side feed holes on the side wall of the connecting tube 20. The end discharge port of the connecting tube 20 is connected to the feed port of the first connecting tube 7, and the discharge port of the first connecting tube 7 is connected to the feed port of the transition heat exchange tube 6.

[0024] The above structure allows the refrigerant to flow through three condensation sub-heat exchange tubes 31 in three ways after entering from the feed port of the inlet pipe main part 10, thereby increasing its flow rate and increasing the contact area between the refrigerant and the inner wall of the condensation sub-heat exchange tube 31, thereby improving the heat exchange effect.

[0025] Moreover, after passing through the condensation heat exchange tube 31, the refrigerant enters the transition heat exchange tube 6 to achieve concentration, thereby ensuring that all refrigerants are concentrated and mixed evenly, and the transition heat exchange tube 6 allows the refrigerant to further exchange heat to achieve heat dissipation and cooling.

[0026] Then, the refrigerant enters the two sub-heat exchange tubes 41 through the two capillaries 9, which not only increases the flow rate of the refrigerant, but also makes the throttling effect more uniform, thereby improving the subsequent evaporative cooling effect.

[0027] Furthermore, there is a gap between the condensing heat exchange tube 3 and the evaporating heat exchange tube 4. A drainage baffle 30 is provided between the condensing heat exchange tube 3 and the evaporating heat exchange tube 4. The front and rear ends of the drainage baffle 30 are fixed to the front plate 1 and the rear plate 2. The drainage baffle 30 can receive condensed water droplets dripping from the evaporating heat exchange tube 4 and can also reduce the flow of air between the condensing heat exchange tube 3 and the evaporating heat exchange tube 4, preventing heat exchange between the two tubes from affecting the subsequent cooling effect.

[0028] Furthermore, the discharge ports of the two heat exchange tubes 41 are connected to the same discharge connecting pipe 40 .

[0029] Two connecting through holes are formed on the side wall of the discharge connecting pipe 40, which are connected to the middle through hole of the discharge connecting pipe 40. One end of the middle through hole extends out of one end surface of the discharge connecting pipe 40. The discharge ports of the two sub-heat exchange pipes 41 are welded and fixed on the side wall of the discharge connecting pipe 40 and are connected to the corresponding connecting through holes.

[0030] When this embodiment is in use, three condensation sub-heat exchange tubes 31 form a condensation heat exchange tube 3, and two sub-heat exchange tubes 41 form an evaporation heat exchange tube 4, so that the flow rate of the refrigerant is greatly increased and the heat exchange effect is improved. At the same time, two capillaries 9 are set to throttle the refrigerant, which improves the throttling uniformity and also increases the flow rate of the refrigerant during throttling, thereby improving the refrigeration effect.

[0031] When this embodiment is in use, it is installed in the entire mobile air conditioner, and the feed port of its inlet pipe main part 10 is connected to the refrigerant discharge port of the compressor of the mobile air conditioner. One end of the middle through hole of the discharge connecting pipe 40 extends out of one end face of the discharge connecting pipe 40 and is connected to the refrigerant return port of the compressor. The whole principle is basically the same as the principle of the existing air conditioner and will not be described in detail.

[0032] Finally, the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the scope of patent protection of the present invention should be defined by the claims.

Claims

1. A heat exchange assembly for a mobile air conditioner, comprising a front end plate (1), a rear end plate (2), a condensing heat exchange tube (3) and an evaporating heat exchange tube (4), characterized in that: The front and rear portions of the condensing heat exchange tube (3) and the evaporating heat exchange tube (4) are fixed to the front plate (1) and the rear plate (2), respectively, and a plurality of heat dissipation fins (5) are fixed to the condensing heat exchange tube (3) and the evaporating heat exchange tube (4); The condensing heat exchange tube (3) is located below the evaporating heat exchange tube (4), and a transition heat exchange tube (6) is provided below the condensing heat exchange tube (3). The front and rear portions of the transition heat exchange tube (6) are respectively fixed to the lower portions of the front end plate (1) and the rear end plate (2); The discharge port of the condensing heat exchange tube (3) is connected to the feed port of the transition heat exchange tube (6) through the first connecting tube (7), the discharge port of the transition heat exchange tube (6) is connected to the feed port of the capillary connecting tube (8), the two discharge ports of the capillary connecting tube (8) are each connected to a capillary tube (9), and the discharge ports of the two capillary tubes (9) are connected to the two feed ports of the evaporating heat exchange tube (4).

2. A heat exchange assembly for a mobile air conditioner according to claim 1, characterized in that: The evaporating heat exchange tube (4) comprises two S-shaped coiled sub-heat exchange tubes (41), the two sub-heat exchange tubes (41) being arranged side by side up and down, and the discharge ports of the two capillary tubes (9) being connected to the feed ports of the two sub-heat exchange tubes (41).

3. The heat exchange assembly for a mobile air conditioner according to claim 1, characterized in that: The condensation heat exchange tube (3) comprises three condensation sub-heat exchange tubes (31) coiled in an S-shape, the three condensation sub-heat exchange tubes (31) being arranged side by side up and down, the feed ports of the three condensation sub-heat exchange tubes (31) being connected to the inlet tube main part (10), one end of the inlet tube main part (10) being formed with a feed port, and three outlets being formed on the side wall of the inlet tube main part (10), the feed ports of the three condensation sub-heat exchange tubes (31) being welded and fixed on the side wall of the inlet tube main part (10) and being connected to the corresponding outlets.

4. A heat exchange assembly for a mobile air conditioner according to claim 3, characterized in that: The inlet pipe main part (10) is a stepped pipe, the upper part of which is a large-diameter pipe part and the lower part is a small-diameter pipe part. The feed ports of the two upper condensation sub-heat exchange pipes (31) are fixed on the outer wall of the large-diameter pipe part and communicate with the corresponding outlets thereon, and the feed port of the lower condensation sub-heat exchange pipe (31) is fixed on the outer wall of the small-diameter pipe part and communicates with the corresponding outlets thereon.

5. The heat exchange assembly for a mobile air conditioner according to claim 3, characterized in that: The discharge ports of the three condensation heat exchange tubes (31) are welded to the side wall of the same connecting tube (20) and communicate with the side feed hole on the side wall of the connecting tube (20). The end discharge port of the connecting tube (20) is connected to the feed port of the first connecting tube (7).

6. The heat exchange assembly for a mobile air conditioner according to claim 1, characterized in that: There is a distance between the condensing heat exchange tube (3) and the evaporating heat exchange tube (4), and a drainage baffle (30) is provided between the condensing heat exchange tube (3) and the evaporating heat exchange tube (4), with the front and rear ends of the drainage baffle (30) being fixed to the front plate (1) and the rear plate (2).

7. The heat exchange assembly for a mobile air conditioner according to claim 2, characterized in that: The discharge ports of the two heat exchange tubes (41) are connected to the same discharge connecting pipe (40).

8. The heat exchange assembly for a mobile air conditioner according to claim 7, characterized in that: Two connecting through holes are formed on the side wall of the discharge connecting pipe (40), and the connecting through holes are communicated with the middle through hole of the discharge connecting pipe (40). One end of the middle through hole extends out of one end surface of the discharge connecting pipe (40). The discharge ports of the two heat exchange pipes (41) are welded and fixed on the side wall of the discharge connecting pipe (40) and communicate with the corresponding connecting through holes.

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